After searching the forum I found a nother post and this quote.
viewtopic.php?f=23&t=35687&p=222006&hilit=alert#p222006
It is understandable that this happens but could the "missing construction materials" ghosts be slept as a group or individually so that they aren't iterated over every secondRseding91 wrote:That information isn't known without touching every single ghost in the map which would waste CPU time. It's only generated as roboports iterate over the ghosts in their area 1 per tick. That's why you'll notice you don't get an alert for every single item but only some of them over time.
I hope this is the correct forum because it felt like a bug.
In case somebody needs inspiration why this could be a problem. In the attached safe we tried to concrete the entire factory before we were ready and this caused a huge power problem. But we can't really place many Solar Panels because the don't get any priority over the concrete.